CARDIOLOGY
VENTRICULAR SEPTAL DEFECT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An indiscernible PR interval
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P waves at appear erratic
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P waves that have a sawtooth configuration
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A QRS complex followed by a compensatory pause
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Detailed explanation-1: -PVCs have a characteristic wide and bizarre QRS (usually greater than 0.12 seconds) on the ECG. There is no associated P-wave, and the T-wave records in the opposite direction from the QRS. Most PVCs are followed by a pause until the next normal impulse originates in the SA node.
Detailed explanation-2: -Two consecutive PVCs are termed doublets while three consecutive PVCs are named triplets. It is important to note that three or more consecutive PVCs are classified as ventricular tachycardia. If the PVCs continuously alternate with a regular sinus beat, the patient is in bigeminy.
Detailed explanation-3: -Premature ventricular contractions (PVCs) are extra, abnormal heartbeats that begin in the ventricles, or lower pumping chambers, and disrupt your regular heart rhythm, sometimes causing you to feel a skipped beat or palpitations.
Detailed explanation-4: -If the current beat R(i) is marked as PVC, the P wave may not be searched before the QRS complex, because the P wave is not present at all.